China Factory Direct
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| CAS number | 177582-21-7 |
| Product name | FMOC-CYS(MMT)-OH |
| Stock | Stock readily available; annual supply capacity exceeding 1,000 tons. |
| Grade | Pharmaceutical GradeReagent Grade |
| Packaging | 25KG/bag |
| Sample | Test Samples Available (Click to Request Samples) |
| COA | View COA |
| Price | Get Quote |
| Supply Type | Bulk / Contract manufacturing / OEM |
| Shipping | FCL / LCL available |
| Payment Terms | Support FOB \ CIF \ EXW quotations, and accept Letter of Credit (L/C). |
| Manufacturer | Greenrock Chemical(China Factory) |
Based on current marketvolatility and material availability.
17+ years in chemical exports.Fully compliant, reliable supply.Your B2B partner in bulk chemical procurement.
| Industry | Application | Process |
|---|---|---|
| Biopharmaceuticals | Used as a protecting group in the synthesis of peptide-based drugs | Applied as a side-chain protecting group for cysteine during peptide synthesis; incorporated during solid-phase or solution-phase peptide chain assembly and subsequently removed under acidic conditions. |
| Scientific Research | Employed in laboratory studies of protein chemical modification | Chemically conjugated to target proteins to investigate functional roles of specific amino acid residues or enable site-specific labeling; the protecting group may later be cleaved under defined conditions, such as acidolysis. |
| Pharmaceutical R&D | Serves as an intermediate in the development of novel antibiotics or other therapeutic agents | Used as a key starting material to supply essential structural motifs in synthetic routes; its protecting group enhances reaction selectivity and final product purity. |
| Test Item | Common Testing Method | Method Overview |
|---|---|---|
| Appearance | Visual Inspection | Observe the sample's color and physical form (typically white to off-white crystalline powder) to determine if it meets standard specifications. |
| Purity | High-Performance Liquid Chromatography (HPLC) | Use a reversed-phase C18 column with a UV detector (~265 nm or 210 nm); calculate main peak purity using area normalization or external standard method, requiring ≥98% or higher. |
| Specific Optical Rotation | Polarimetry | Dissolve the sample in a specified solvent (e.g., DMF or acetonitrile/water), measure optical rotation to verify chiral configuration and optical purity. |
| Melting Point | Capillary Melting Point Apparatus | Determine the melting temperature range as a physical constant to assist in verifying structural integrity. |
| Moisture Content | Karl Fischer Titration | Measure water content using coulometric or volumetric methods to ensure compliance with loss on drying or moisture limits (typically <1.0%). |
| Residual Solvents | Gas Chromatography (GC) | Headspace or direct injection to detect organic solvents possibly remaining from synthesis (e.g., DCM, DMF, ethyl acetate). |
| Heavy Metals | Atomic Absorption Spectroscopy (AAS) or ICP-MS | Test total or individual heavy metals (e.g., lead, arsenic, mercury, cadmium) according to pharmacopoeial methods to ensure compliance with safety limits (e.g., <10 ppm). |
| Individual Impurity | HPLC-UV or LC-MS | Identify and quantify individual impurities using HPLC coupled with UV or mass spectrometry; control maximum individual impurity ≤0.5%. |
| Structural Confirmation | Nuclear Magnetic Resonance (NMR), Infrared Spectroscopy (IR), Mass Spectrometry (MS) | ¹H-NMR and ¹³C-NMR to confirm molecular structure; IR to verify characteristic functional groups; ESI-MS or MALDI-TOF to confirm molecular weight. |
| Enantiomeric Purity | Chiral HPLC or Capillary Electrophoresis | Use chiral chromatographic columns to separate D/L isomers, ensuring L-configuration predominates with enantiomeric excess (ee value) >99%. |
| Test Item | Specification |
|---|---|
| Appearance | Pale-yellow solid |
| Purity | >=98.0% (HPLC) |
| Total Impurities | <=2.0% |
| Single Impurity | <=0.5% |
| Water Content (KF) | <=0.5% |
| Optical Rotation | +14.0±1.0° (c=1, DMF) |
| Melting Point | 168–172°C |
| Identification (NMR) | Consistent with structure |
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| CAS/Product ID | *Required fields | |
| Lot/Batch Number | *Required fields | |
1. How do you ensure product quality consistency?
We rely on a mature China-based manufacturing system and implement strict batch control and quality inspection for every shipment. Our production process complies with ISO 9001 standards, and a COA is provided for each batch to ensure consistent and reliable quality.
2. Do you offer competitive pricing for bulk orders?
Yes, as a China-based manufacturer and bulk supplier, we provide tiered pricing based on order volume. We support FOB and CIF quotations, as well as L/C payment terms for large transactions to meet international trade requirements.
3. Can you support large-volume or long-term supply?
We have stable production capacity and a well-established supply chain, enabling continuous bulk supply. We support ton-level and container-level orders, as well as long-term cooperation projects.
4. What is your typical lead time?
For in-stock products, shipment can be arranged within 1–3 days. For bulk packaging or customized orders, lead time depends on the specific quantity and production schedule.
5. What documents do you provide?
We can provide complete documentation upon request, including COA, SDS, TDS, and other compliance certificates, meeting industrial procurement and export requirements.
6. Can you customize product specifications or packaging?
Yes, we support customization of parameters such as purity, impurities, residual solvents, and heavy metals. We also offer various bulk packaging options, including 25kg bags, drums, and IBC tanks, suitable for industrial applications and transportation.
7. What shipping options do you support?
We support both FCL (Full Container Load) and LCL (Less than Container Load) shipments, and can flexibly arrange logistics solutions based on order size to meet bulk chemical export needs.
8. Do you provide technical or application support?
Yes, we provide basic application guidance and technical support based on industry experience to help customers optimize product usage.
9. How do you handle compliance and export regulations?
We are familiar with international trade and export regulations, ensuring all products comply with relevant requirements. We also provide complete documentation to support smooth customs clearance and global delivery.